It should be removed regularly by a dentist or dental hygienist; if neglected, it can cause bacteria to lodge between the gums and the teeth, causing gum infection, dental caries, loosening of the teeth, and other disorders. Called also tartar. gastric calculus gastrolith. intestinal calculus enterolith. lung calculus a hard mass or concretion formed in the bronchi around a small center of inorganic material, or from calcified portions of lung tissue or adjacent lymph nodes. Called also pneumolith.
1 Second, your graduation announcement should include the important details of who, what, when, where, and why. 2  This information lets the recipient know what they need to do and by when. 3  If your graduation announcement includes an invitation, RSVP information should be included.
Anyone who you would send a Christmas or holiday card to is fair game for graduation announcements. Also be sure to include tutors, teachers, classmates, or anyone else closely involved in your high school or college career. When receiving grad announcements or invitations, do your best to respond promptly.